On Thursday, the UN General Assembly adopted a non-binding resolution calling for all member states to fight against Holocaust denial and anti-Semitism, especially on social media.
The Israeli text was developed with the help of Germany and co-sponsored by several dozen of the 193 states that make up the United Nations.
Iran, however, expressed opposition to the resolution, stating that Tehran dissociated itself from the text.
The resolution rejects and condemns any denial of the Holocaust as a historical event, in full or in part, according to the text.
The Holocaust saw the killing of six million European Jews between 1939 and 1945 by the Nazis and their supporters.
The text praises countries that preserve sites of former Nazi death camps, concentration camps, forced labor camps, execution sites, and prisons during the Holocaust.
It urges UN members to develop educational programs to help prevent future acts of genocide and call for action by states and social media companies to combat anti-Semitism and Holocaust denial or distortion. Gilad Erdan, Israel's ambassador to the UN, welcomed the historic resolution, which had been negotiated for several months.
The text for the first time gives a clear definition of Holocaust denial, calls for countries to take steps in the fight against anti-Semitism, and demands for social media giants such as Facebook, Twitter and Instagram to fight hateful content on their platforms.
Israel's foreign minister Yair Lapid and his German counterpart Annalena Baerbock welcomed the resolution, which they said served as proof that the international community speaks with one voice on the subject.
In 2005 a resolution designated January 27 as an international day of remembrance for the victims of the Holocaust.
The passage of the resolution was welcomed by Yad Vashem, the World Holocaust Remembrance Center in Israel.
Holocaust distortion is so dangerous because, quite plainly, it misrepresents essential facts of history in order to legitimize past and present misdeeds, said director Dani Dayan.
The Holocaust has a significant relevance for many important contemporary issues. He added that Denying and distorting the uniqueness and unreliable aspects of events is not only detrimental to the memory of the Holocaust, but to that of other atrocities and genocides as well.